<template>
  <div>
    <!-- 导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 提示区域 -->
      <el-alert
        title="添加商品信息"
        center
        type="info"
        show-icon
        :closable="false"
      >
      </el-alert>
      <!-- 步骤条区域 -->
      <el-steps
        :space="200"
        :active="activeIndex - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!-- 标签也 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addRuleFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          v-model="activeIndex"
          tab-position="left"
          :before-leave="berforTabLeave"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                clearable
                expand-trigger="hover"
                v-model="addForm.goods_cat"
                :options="catelist"
                :props="cateProps"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyTabData"
              :key="item.attr_id"
            >
              <!-- 复选框组 -->
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  border
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                ></el-checkbox> </el-checkbox-group
            ></el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyTabData"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input
            ></el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <!-- action图片上传的api地址 -->
            <el-upload
              :headers="headersObj"
              :action="uploadUrl"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <!-- 富文本编辑器组件 -->
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <el-button type="primary" class="btnAdd" @click="add"
              >添加商品</el-button
            >
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 图片预览 -->
    <el-dialog
      title="图片预览"
      :visible.sync="perviewDialogTableVisible"
      width="30%"
    >
      <img :src="previewPath" alt="" class="perviewImg" />
    </el-dialog>
  </div>
</template>

<script>
import _ from "lodash";
export default {
  name: "add",

  data() {
    return {
      activeIndex: "0",
      //添加商品表单的数据对象
      addForm: {
        goods_name: "",
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        //商品的详情描述
        goods_introduce: "",
        attrs: [],
      },
      addFormRules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" },
        ],
        goods_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" },
        ],
        goods_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" },
        ],
        goods_number: [
          { required: true, message: "请输入商品数量", trigger: "blur" },
        ],
        goods_cat: [
          { required: true, message: "请选择商品分类", trigger: "blur" },
        ],
      },
      //商品分类数据列表
      catelist: [],
      //级联选择器的配置对象
      cateProps: {
        label: "cat_name",
        value: "cat_id",
        children: "children",
      },
      //动态参数列表
      manyTabData: [],
      //静态参数列表
      onlyTabData: [],
      uploadUrl: "http://127.0.0.1:8888/api/private/v1/upload",
      // 图片上传的header请求头对象
      headersObj: {
        Authorization: window.sessionStorage.getItem("token"),
      },
      previewPath: "",
      perviewDialogTableVisible: false,
    };
  },
  created() {
    this.getCateList();
  },
  methods: {
    //获取所有商品分类数据
    async getCateList() {
      const { data: res } = await this.$http.get("categories");
      if (res.meta.status !== 200) {
        return this.$http.err("请求失败");
      }
      this.catelist = res.data;
      console.log(this.catelist);
    },
    //级联选择器选中项发生变变化，会触发这个函数
    handleChange() {
      console.log(this.addForm.goods_cat);
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = [];
      }
    },
    //tabs标签页的切换
    berforTabLeave(activeName, oldActiveName) {
      // console.log("离开的标签页是" + oldActiveName);
      // console.log("进入的标签页是" + activeName);
      if (oldActiveName === "0" && this.addForm.goods_cat.length !== 3) {
        this.$message.info("请先选择商品分类");
        return false;
      }
    },
    //tab 被选中时触发
    async tabClicked() {
      //console.log(this.activeIndex);
      //证明访问的是动态面板
      if (this.activeIndex == "1") {
        console.log("商品属性");
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: "many" },
          }
        );
        if (res.meta.status !== 200) {
          return this.$http.err("请求分类参数失败");
        }

        //console.log(res.data);
        //将获得的数据进行遍历，将attr_vals进行分割
        res.data.forEach((item) => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(" ");
        });
        this.manyTabData = res.data;
        console.log(this.manyTabData);
      } else if (this.activeIndex == "2") {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: "only" },
          }
        );
        if (res.meta.status !== 200) {
          return this.$message.err("请求分类参数失败");
        }
        //console.log(res.data);
        this.onlyTabData = res.data;
        console.log(this.onlyTabData);
      }
    },
    //handlePreview处理图片预览效果
    handlePreview(file) {
      console.log(file);
      this.previewPath = file.response.data.url;
      this.perviewDialogTableVisible = true;
    },
    //handleRemove处理图片删除时效果
    handleRemove(file) {
      console.log(file);
      // 1.获得将要删除的图片的临时路径
      const filePath = file.response.data.tmp_path;
      // 2.从pics数组中， 找到这个图片对应的索引
      const i = this.addForm.pics.findIndex((x) => x.pic == filePath);
      //3.调用数组的splice方法，从pics中删除
      this.addForm.pics.splice(i, 1);
      console.log(this.addForm);
    },
    //handleSuccess监听图片上传成功的事件
    handleSuccess(response) {
      console.log(response);
      // 1.拼接得到一个数据对选哪个
      const picInfo = {
        pic: response.data.tmp_path,
      };
      this.addForm.pics.push(picInfo);
      console.log(this.addForm);
    },
    //添加商品
    async add() {
      this.$refs.addRuleFormRef.validate((valid) => {
        if (!valid) {
          return this.$message.err("请填写必要的表单项");
        }
      });
      console.log(this.addForm);
      //添加业务逻辑
      //将数组变为字符串
      //深拷贝，lodadh  cloneDeep(obj)
      const form = _.cloneDeep(this.addForm);
      form.goods_cat = form.goods_cat.join(",");
      //处理动态参数
      this.manyTabData.forEach((item) => {
        const newInfo = {
          attr_id: item.attr_id,
          attr_value: item.attr_vals.join(" "),
        };
        this.addForm.attrs.push(newInfo);
      });
      //处理静态属性
      this.onlyTabData.forEach((item) => {
        const newInfo = {
          attr_id: item.attr_id,
          attr_value: item.attr_vals,
        };
        this.addForm.attrs.push(newInfo);
      });
      form.attrs = this.addForm.attrs;
      console.log(form);
      //发起请求，添加商品
      const { data: res } = await this.$http.post(`goods`, form);
      if (res.meta.status !== 201) {
        return this.$message.error("添加商品失败");
      }
      this.$message.success("添加商品成功");
      this.$router.push("/goods");
    },
  },

  computed: {
    cateId() {
      if (this.addForm.goods_cat.length == 3) {
        return this.addForm.goods_cat[2];
      }
      return null;
    },
  },
};
</script>

<style lang="less" scoped>
.el-checkbox {
  margin: 0 10px 0 0 !important;
}
.perviewImg {
  width: 100%;
}
.btnAdd {
  margin-top: 10px;
}
</style>